Feeding-machine attachment for printing-presses.



Patented Aug. 1, [899.

W. G. TBEVETTE. FEEDING MACHINEATTACHMENT FDR PRIN'HNG PRESSES.

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Patented Aug. l, I899.

. w a. TBEVETTE. FEEDING MACHINE ATTACHMENT FDR PRINTING PBESSES.

(Application filed Oct. 31, 1898.)

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No. 629,830. Patanted Aug. I, 1899. W. G. TREVETTE. FEEDING MACHINEATTACHMENT FOB PRINTING PRES-SE8.

(Application filed Oct. 81, 1896.)

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No 629,830. Patented Aug. 1, I899.

w. a. TBEVETTE.

FEEDING MACHINE ATTACHMENT FUR PRINTING PRESSES.

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No. 629,830. Patented Aug. I, I899.

' w. a. TREVETTE.

FEEDING MACHINE-ATTACHMENT FOB PRINTING PRESSES.

(Application filed Oct. 81, 1896.)

{N0 Modal.)

No. 629,830. Patented Aug. I, I899. w. a. TREVETTE.

FEEDING MACHINE ATTACHMENT FOB PRINTING PRESSES.

(Application filed Oct. 81, X896.)

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Patented Aug. I, I899.

No. 629,830. I

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FEEDING MACHINE ATTACHMENT FOR PRINTING PRESSES.

IIIIIIIIIII 5g Patented Aug. I, I899.

W. G.-TREYETTE. FEEDING MACHINE ATTACHMENT FOB PRINTING PRESSES.

(Applicatiol; filed Oct. 31, 1896.)

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No. 629,830. Patented Aug. I, I899. W. G. TREVETTE.

FEEDING MACHINE ATTACHMENT FDR PRIN'I'ING PBES SESQ (Application filedon. 81, 1896.)

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UN-Iren- STATES? PATENT @FFIcE.

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FEEDlNG -MACl-llNE- ATTACHMENT FOR PRINTING-PRESSES.

SPECIFICATION forming part of Letters l atent No. 629,830, dated August1,1899. Application filed October 31, 1896. $erial No. 610,749. (Nomodel.)

To all whmn it may concern-.-

Be it known that I, WENTWORTH 4G. TRE- specification.

vide means to automatically examine every My present invention relatesto certain new and useful improvements in a feeding-machine attachmentfor printing-presses; and

it comprises an apparatus which may be con-.

nected with and adapted to any well-known form of feeding-machine andlikewise any known printing-press of the cylinder type.

Heretofore it has been customary and the practice still prevails to haveanoperator whose sole duty it is to feedsingle sheets from a pile onthefeed-table of a printingpress to the press-cylinder. This operatormust be careful to feed but a single sheet to the machine, must arrangethe sheet properly in the machine and throw out all defective sheets, atthe same time tripping the press with his foot to prevent the type frommaking an impression upon the tympan;

have beendescribed and some of, them have been put into actual use, butas far as I am aware the principle, as well as the constructionhereinafter described as constituting my inventiomis entirely new withme and is essentially different in every respect from anything nowexisting in the art.

It is my primary object, therefore, to provide a machine which willautomatically perform all of the operations and do whatever the operatorhas been accustomed to do heretofore.

Another object of the invention is to provide means for registering andsquaring a sheet of paper in the machine just before it is taken by thepress-cylinder of the printingpress, so that it will be delivered to thepress properly arranged to receive an impression from the type.

Another object of the invention is to pro- Feeding-machineattachmentsfor printing-presses sheet of paper as it passes through theattachment and throw out all defective sheets or two sheets which maycling together and prevent more thana single perfect she-etfrom beingtaken by the press-cylinder'and carried through the press.

A further object of the. invention is to provide automatic devices fortripping the press whenever a sheet is thrown out as being defective orwhenever the press-cylinder is allowed to turn without carrying a sheetof paper into the press mechanism; and a-still further object is toautomatically stop all the operative mechanism after the press has beentripped successively apredetermined number of times. 7

In the apparatus hereinafter described the devices are arranged andadapted to throw out a sheet of paper the forward corners of which are,torn or mutilated, as well as to throw out two or moresheets which maybe carried forward from the feeding-machine, and it will therefore beunderstood that, by

referringto an imperfect'sheet I mean such In the accompanying drawings,forming part of this application, Figure 1 is a side clevation ofaprinting-press having my attachment applied thereto and showing thegen.-

eral arrangement of the gearing by which 1 power is communicated to theseveral parts, as well as the tapes which may be used for the purpose ofconveying the paper from the feeding-machine to this attachment. In thisfigure I have illustrated only so much of the printing-press as seems tobe necessary for the purpose of clearly and fully understanding myinvention, the parts to which the dilferent devices constituting myinvention are attachedbeing indicated in their proper relative positionsin this figure. Fig.2 is a horizontal sectional view on the line 22 of,Fig. 1, showing the position and arrangernentot the stopping devices ofa'printingepress adapted to be operated automatically by myimprovements. Fig. 3 is a top plan view of approximately one half of myattachment, the other half being constructed to all intents and purposesin every way the same as that shown, and the parts in this figure arehroken away gaged the sheet of paper.

in places to disclose the different arrangement and location of otherparts. Fig. 4 is a top plan view of the registering, guiding, andtripping devices. Fig. 5 is a Vertical sectional view on the line 5 5 ofFig. 4:, showing the position of the guiding-arm and the registeringdevice when the latter has first en- Fig. 6 is a sectional view on theline 6 6 of Fig. 4, showing the registering device in its most backwardposition after it has freed itself from engagement with the paper andraised out of operative position. Fig. 7 is also a sectional view on theline 7 7 of Fig. 4, showing the normal position of the parts. Fig. 7 isa transverse sectional View across the screw-shafts which support theguiding and registering devices, taken on the line 7 7 of Fig. 4. Fig. 8is a transverse sectional view on the line 8 8 of Fig. 3, this viewshowing in full lines the position of the devices as they appear whenthe sheet is entering the attachment, the stop-fingers and throw-outfingers being shown in broken lines in the elevated position which theyassume when the machine is throwing out an imperfect sheet. Fig. 9 is atransverse sectional view taken on the line 9 9 of Fig. 3. Fig. 10 showsthe cam and lever for operating the register and guiding devices. Fig.11 illustrates a corner of the attachment. Fig. 12

is a transverse sectional view showing the throw-out finger, rock-shaft,and the casting attached on one of its ends. Fig. 13 is a transversesectional view on the line 13 13 of Fig. 3, showing in broken lines thenormal elevated position of the tripper and in full lines the tripper inits position when resting upon the sheet of paper. Fig. 14 is a frontelevation of so much of the mechanism as is shown in Fig. 3. Fig. 15 isa detail View of the tripping device, the tripper rock-shaft and thetripper-plate being shown in section. Fig. 16 is a top plan view of thetripper-plate. Fig. 17 is a transverse sectional view on the line l7 17of Fig. 18, showing the manner of securing the stop-finger to thetripper rock-shaft. Fig. 18 is a transverse sectional view on the line18 18 of Fig. 17. Fig. 19 is a bottom plan view of the stopfinger. Fig.20 is a top plan view of the bottom guide. Fig. 21 is an enlarged viewof the cam and lever devices for operating the tripper rock-shaft andthe registering and guiding devices, the parts being shown in theposition which they occupy when the nippers on the press-cylinder havejust taken hold of the sheet and are proceeding to carry it into thepress mechanism, the upper guides, the stop-fingers, and the trippingdevices being-raised. Fig. 22 is a front view of the cam and leverdevices shown in Fig. 21, the rods connecting said levers to therespective parts operated thereby being shown in section. Fig. 23illustrates the position of the tripper-rock-shaft lever and itsassociated parts when the paper is entering the operative mechanism ofmy attachment and the stop-fingers are dropping into position. Fig. 24showsthe position of the same parts after the stop-fingers have droppedand the register has closed upon and engaged the sheet and while thetrippers are beginning to drop. Fig. 25 is a similar view, in which theparts are shown in the position they assume when the sheet is at rest inthe attachment where it will be caught by the nippers of thepresscylinder, or, if it is an imperfect sheet, the trippers will in thesubsequent operation cause the throw-out fingers to raise the sheet sothat it can be delivered into the imper feet-sheet receptacle. Fig. 26is a detail View of the bell-crank lever which is adapted to operate thethrow-out-finger rock-shaft. Fig. 27 illustrates the parts in theposition when an imperfect sheet is partially delivered into theimperfect-sheet receptacle.

In the drawings I have not considered it necessary to show the parts ofa feeding-machine, as such machines are now made in several styles, anyone of which can be used in connection with my printing-pressattachment, one of these machines being shown and described in myLetters Patent No. 562,866, dated June 30, 1896, and another in myLetters Patent, No. 562,867, dated June 30, 1896,

either of which can be employed with my attachment.

Referring to the drawings, in which like numerals of reference denotecorresponding parts in all the figures, 1 designates the side frame ofany ordinary printing-press to which my attachment may be applied, 2 thepowershaft, to which motion is communicated in a suitable manner, and 3the press-cylinder, which is mounted on a shaft 4, suitably geared withthe power-shaft, so that motion can be imparted from the power-shaft tothe presscylinder.

The attachment comprises a frame consisting of the sides 5, which arepivotally secured at 6 to the frame 1 and are connected together bymeans of the bar 7 and also by the shafts and other parts, hereinafterdescribed. This frame carries the devices for registering and guidingthe paper, the trippers, and the associated parts, and it is pivotallysecured at its rear end to the frame of the printing-press, so that itcan be raised entirely out of position whenever necessary for thepurpose of getting at the various parts of the attachment and press.Then the attachment is arranged in operative position, as shown in Fig.1, the forward end thereof issupported on the frame of the machine insuch a position that the parts and devices will operate in their propermanner. I have shown in the drawings approximately one half of the frameand the devices and parts supported and carried by that half of theattachment, it being understood, of course, that the same parts anddevices are arranged on the other half of the attachment, which isconstructed in every way the same as that shown. tion hereinafter I willrefer, therefore, to but In the descripone register being operated at atime, howof the press, and it carries a sprocket-wheel 9, andasprocket-chain is trained over this sprocket and a correspondingsprocket on the shaft 4, or any other connections maybe made for thepurpose of imparting movement to this shaft 8, which I will hereinafterrefer to as the cam-shaft. This cam-shaft carries a cam 11, whichoperates the register-lever 12, this lever being pivotally mounted on astud 13 and provided with a roller 14, which operates in contact withthe cam 11. The upper end of this register-lever 12 is provided with asocket 15, preferably of a substantially angular form, to receive theend of a connecting-rod 16, which is attached at its other end to abell-crank lever 17, the end of this rod being held in the socket 15 bymeans of a spring 18. A fixed screw-shaft 19 is suitably mounted in theframe of the attachment, and it extends almost to the center of saidframe, being provided outside of the frame with a gear-wheel 20, whichis arranged to -mesh with a corresponding gear-wheel 21 on areciprocating screw shaft 22, similarly mounted in the frame and adaptedto be reciprocated back and forth in a manner hereinafter described, thegear-wheel 21 being provided with a spline 23, whereby it is keyed tothe shafts 19 and 22.

upon the shaft 22 to turn the same when the shaft 19 is turned,butpermits the reciprocation of the shaft 22. An arm 23, secured to theframe, prevents the loose gear-wheel 21 from moving with thereciprocatingvshaft. A link 24 connects the other arm of the bellcranklever 17 to a plate 25, which plate is secured rigidly to thereciprocating screw shaft 22' by means of a collar 26, which is securedbetween the U shaped members of that portion of the plate 25 throughwhich the shaft 22' passes. It will be understood, of course, that theshafts 19 and 22 correspond A bar 27, provided with teeth on one side toconstitute a rack, is secured rigidly to the plate 25, and the rack isarranged to engage witha pinion 28, rigidly secured on a shaft 29,supported in the frame of the attachment. The lower end of this shaft29is provided with a head 30, and a coilspring 31 has one end secured insaid head and its other end secured in a collar 32, which is fastenedvrigidly to the frame. The operation of these parts just referred to issuch that when the rack-bar 27 is moved away from the center of themachine to the right in Fig. 3 by reason of the operation of thebell-crank lever 17 and its associated parts the spring 31 and thespring 18 are tightened, so that after this movement of the rack-bar iscompleted, the cam 11 having ceased to act upon the register-lever, thespring 31, acting on the shaft 29, and the spring 18, acting upon Ashaft 8 is suitably mounted in the frame the connecting rod 16,cooperate to move the rack-bar 27 to the left in Fig. 3, therebybringing the registering device forward and into contact with the sheetof paper. movement of the rack-bar 27 is communicated The in an oppositedirection to the rack-bar 27 through the medium of the pinion 28, with 1which they both engage, so that when the rack-bar 27 moves to the rightthe rack-bar 27, is moved to the left, and vice versa. It

will thus be seen that the reciprocating shafts 22 and 22' and theregistering devices carried thereby are moved toward the center of themachine and each other under the influence of the spring 18 and thespring 31, so that the guiding and registering devices may engage thepaper, and the same parts are moved away from each other by theoperation of the register-cam, the rod 16, bell-crank lever 17, and link24.

I Will now proceed to describe in detail the side guides and theregistering devicesfor the paper, one set being arranged on each side ofthe machine. It will be understood, of course, that the registeringdevice on one, side of the machine only is in operation at a time, thedevice on that side of the machine with which the paper is squared beingset to engage the paper while the other registering deviceis arrangedout of position.

The frame of the guiding device (see Sheet 3) comprises the ends 33,which are provided with holes to receive the screw-shafts 19 and 22,which shafts are provided with right and left hand screw-threads,respectively, and support the guiding and registering devices andoperate the same. A guide-arm 34 is pivotally secured at 35 to one endof the guide-frame, and on one side of its forward end is an extension36. A fine adjustingscrew 37 is arranged in said extension and isadapted to be adjusted toward and away from the top plate 38 of theguide-frame, this screw constituting, with said top plate, a gage whichis adjusted so that if more than a single sheet or predetermined numberof sheets of the sheets of paper will be delivered into the imperfect-sheet receptacle and the press tripped The guide-arm isprovided with a shoulder 39, which is arranged to normally rest upon ashoulder 40 on the top plate 38, and the position of the forward end ofthe guide-arm is such with relation to said top plate when the guide-armis downupon the paper that the registering device hereinafter describedcan operate to draw the sheet of paper sidewise to the shoulder 40,where its movement will be stopped, the position of the guide-arm closeto the top plate preventing said sheet from crumpling or wrinklingduring this operation.

The registering device comprises a block 11, adjustably mounted on thereciprocating screw-shaft 22, said block being provided with abifurcated side extension 42 to span the screw-shaft l9, and therebyform a guide for the registering device in its operation, Fig. 8. Theblock has a rearwardly-extending arm 43, to which the register-arm-44 ispivotally secured, a locking device being also pivotally secured on saidextension and rigidly connected with the register-arm. The lockingdevice 45 comprises in its simplest .form a plate having a notch 46therein to receive a roller 47 on a spring-pressed arm 48, said armbeing secured to the under side of the block and held in position bymeans of a coil-spring 49. This registering device is adapted to moveback and forth with the reciprocatin g screw-shaft 22, the top plate 38of the guide-frame and the guide-arm being provided with slots 50, inwhich the upwardlyprojecting parts of the registering device slide. Alug 51 is arranged on the under side of the guide-arm 34 and providedwith a friction-roller, which is arranged to ride up the incline 52 onthe block 41, a spring 53 being attached to one end 33 of theguide-frame and the guide-arm to pull said arm downward when theregistering device moves forward.

The operation of the registering device is as follows: After theregister-lever 12 has moved to the right in Fig. 10 to rock thebellcrank lever 17 and the link 24, attached to said bell-crank lever,has moved the reciprocating screw-shaft to carry the registering devicetoward the side of the machine and register a sheet of paper the springs18 and 31 operate to move the reciprocating shaft toward the center ofthe attachment to carry the registering device forward into position toengage the next sheet of paper. As the registering device moves forwardin the slots from the position shown in Fig. 7 the spring 53 pulls theguide'arm down upon the paper, which is now resting upon the top plate38, the lug 51 sliding down over the incline 52 of the block. While theregistering device is moving forward in this position the spring-arm 48,engaging the locking-plate 45, holds the register-arm 44 in an elevatedposition; but as the device proceeds forward the releasing-pin 54engages the lug 55 on the locking-plate and forces said plate out ofengagement with the spring-arm 48, thereby bringing the register-armdown upon the paper, the roller 47 on the spring-arm 48 then engagingthe front of the locking-plate to hold the register-arm in contact withthe paper, Fig. 5. The reciprocating screw-shaft moves now to itsoriginal position under the influence of cam 11 and the parts actuatedthereby, carrying with it the registering device, which is clamped uponthe paper, the guide-arm also remaining down upon the paper. As theregistering device proceeds to its rearward position, adjacent to theside of the attachment, the lug 51 on the guide-arm slides up theincline 52 on the block 41 and raises the guidearm to its elevatedposition, and about the same time the heel 56 of the locking-plateengages the end of the guide-frame and causes the locking-plate to forceitself over the roller 47 until said roller engages the notch 46,thereby setting the registering device for another operation.

The screw-gage 37 is adapted to be set so finely that it will hold asingle sheet of paper in position on the top plate 38, so that theregistering device can pull said sheet of pa per over to the shoulder 40and square the sheet in the attachment; but if two or more sheets ofpaper happen to get in position between the guide-arm and the top platethe screw-gage will press so hard upon the sheet by reason of its weightand the pull of spring 53 and bind the sheets of paper so tightlyagainst the top plate that the registering device cannot draw saidsheets over to the shoulder 40, and therefore, as will be hereinafterexplained, the tripping mechanism will operate to trip the press andcause other devices to deliver the two or more sheets into theimperfect-sheet receptacle. The sliding and pulling movement of theregistering device, which is preferably provided with a soft facing 57,is so easy that when the edge of the sheet of paper strikes the shoulder40 the register-arm will slide over the sheet, and the position of theforward end of the guide-arm and the screw-gage with relation to the topplate is such that they will prevent the sheet from binding against theshoulder 40 or becoming wrinkled or crumpled. The registering andguiding devices are adjustable simultaneously by means of thescrew-shafts 19 and 22 and the intermediate gearing 20 21, saidadjustment being accomplished by means of a crank or other deviceattached to the end of one of the shafts.

The attachment can be adapted to operate on paper of different widths byadjusting the registering and guiding devices on the screwshafts. Thisis accomplished by simply operating the gearing hereinbefore referred toto turn one of the shaf s, as 22, (see Fig. 3,) whereby through thelntermediate gearing the two screw-shafts are turned in oppositedirections, and as these screw-shafts have right and left threads theguiding device and the registering device will be simultaneouslyadjusted. The ends of the guiding device are provided with threadedopenings to receive the screw-shaf t 19, and they are also provided withopenings to receive the reciprocating screw-shaft 22; but it will beunderstood that the holes for the reciprocating screw-shaft are notthreaded, and said shaft simply works freely back and forth therein. Theblock of the registering device is provided with a threaded opening toreceive the reciprocating screw-shaft, so that when these screw-shaftsare turned, as hereinbefore explained, the guiding and registeringdevices will be moved, respectively, on the fixed and the reciprocatingshafts.

When it is desired to throw the registerarm into such a position that itwill not engage the paper in the operation of the ma chine, the locking-plate is forced forward until the roller at? engages the shoulder 58there on, whereupon the register-arm will be held in the position shownin Fig. 6, this adj ust-.

ment being readily accomplished by pulling upon the register-arm andovercoming the tension of the spring-arm 4S and the spring 49.

I will next describe the devices for examin'ing the paper and trippingthe press whenever an imperfect sheet or two or more sheets are fedthrough the attachment.

A trip-lever 59 is pivoted on the stud 13 ad jaceut to theregister-lever 12, and it is operatedby a trip-cam 60, the lever beingprm vided with a roller 61, which operates against said cam. Thisleveris provided with a socket 62, corresponding substantially in everyway to the socket 15 of the register-lever, and it receives the end of arod 63, which is connected at its forward end to a bell-crank 1ever 6-secured on the end of the tripper rockshaft 65, said shaft being mountedin the sides of the frame of the attachment.

The tripping device comprises an arm 66, which is pivotally secured inthe lugs 67 on the guide-frame, as shown in Fig. 4, this arm carrying onits forward end a lateral slotted extension 68, which extension projectsover a tripper-plate 69, provided at one end with a flange, by means ofwhich it is secured to the side of the guide-frame, Figs. 6 and 15. Theplate is provided with one or more holes 70, through which the tripper71 projects when no sheet of paper covers the holes. This tripperconsists of an adj usting-screw 72, having a projection adapted to enterthe opening 70 in the tripper-platgz.

If a sheet of paper in perfect condition is fed through the machine, itis apparent that the tripper 71 will rest upon the paper which isbetween itself and the tripper-plate; but, as before stated, if nosheetof paper is there the tripper will project into the holes and causethe shoulder 73 on the rear end of the tripper-arm to engage theshoulder 74 on the collar 75, secured on the tripper rock-shaft, so thatsaid shaft will be prevented from rocking to the full extent, as it willwhen a perfect sheet of paper is being carried to the press. Underordinary conditions the shoulders 7 3 and 74: will not engage each otherfor the reason that the tripper rests upon the sheet of paper (see Fig.13) and holds the rear end of the tripper-arm in such a position thatthe shoulder 74 on the collar will not engage the shoulder 73 onthetripperarm; but if no sheet of paper covers the holes in thetripper-plate the tripper projects into said holes, the additionaldownward move-' ment of the tripper being sufficient to raise the rearend of the tripper-arm to such a height that the shoulder 74 will engagethe shoulder 73, thereby stopping the rocking movement of the tripperrock-shaft. An arm 76 is arranged on said collar for the purpose ofengaging a roller 77 on the rear end of the 'trippenarm and raising thetripper into the position shown in dotted lines in Fig. 13 when the rockshaft is rocked and the sheet of paper is passing into position upon thetripperplates.

A cam 78 is secured on the cam-shaft 8,

Sheet 7, and it engages a roller 79 on a throwout leverBO, this leverbeing mounted on the stud 13 and provided with a forwardly-projectingupper end 81. A catch-lever 82 is also mounted on the stud 13 betweenthe throw-out lever 80 and the trip-lever 59, said catch-lever beingprovided with a pawl 83, which is adapted to engage theforwardlyprojecting upper end 81 of the throw-out lever. A lug Si isarranged on the side of the trip-lever 59 and projects into the path ofthe catch-lever, so that when said catch-lever is projected forwardsuificiently it will engage the lug 84 and carry with it thetrip-leverfii).

A weighted arm 85 is pivotally secured to the frame and provided with aforwardly-projectin g end having an inclined face 86. hen, thetrip-lever is moved rearwardly (to the left in Fig. 25) in its ordinaryoperation, the pin 87 rides upon the incline 86 of the weighted arm 85and depresses said arm sufiicient to engage the rearward'ly-extendingend 88 of the pawl 83, thereby disengaging said pawl from the throw-outlever; butif the shoulders 73 and 74 become engaged the tripperrockshaft is prevented from rocking its full distance, and therefore thetrip-rod 63 does not move enough to bring the trip-lever back so thatthe pin 87 will engage the weighted arm 85 for the purpose ofdisengaging the pawl from the throw-out lever, and in this event thethrow-out lever being engaged with the catch-lever through the medium ofthe pawl these levers are moved forward together, and as the catch-leverengages the lug 84: on the trip-lever said trip-lever is also carriedforward and to a greater distance than is usual in its ordinaryoperation. During this prolonged forward movement of the trip-lever thetrip-rod forces the bell-crank lever forward until the arm 89 of saidlever engages a projection 90 on the casting 93, which is secured on thethrow-out-finger rock-shaft, thisupward movement of the bell-crank leverbeing sufficient to rock the throw-outfinger rockshaft and cause thelatter to raise the throwout fingers 92. Duringthis operation the arm 76 on the collar 75 has depressed the rear end of the tripper-arm andraised the tripper above the tripper-plate. (See Figs. 8, 11, and 12.)

The throw-out-fiuger rock-shaft 91 is journaled in suitable bearin gs inthe frame of the machine above the vtripper rock-shaft and it carriesthe castings which support the throwout fingers. The casting 93, one ofwhich is provided on each end of the throw-out-finger rock-shaft, isprovided with a downwardlyextending curved end 93, which supports afinger-bar 9i, having the grooved side edges 95, Figs. 9 and 12. Thethrow-out fingers 92 are secured on said finger-bar, being provided witha downturned end 96 to engage the groove on one side of the finger-barand a springplate 97, secured on its under side and arranged and bent toengage the groove on the opposite side of said finger-bar, so that thesefingers and any number of them desired may be readily attached to thefinger-bar by springing the downturned end 96 and the springplate 97 inplace. Other means for fastening the throw-out fingers to the finger-barmay be employed; but this is an exceedingly simple and effectiveconstruction, which permits the ready attachment of the fingers to theThis finger-bar is provided at or about its'center with a shoe 98, whichis adapted to rest and slide upon a rest-plate 99, secured on the frameof the attachment, so that the finger-bar will always be maintained inits proper position to hold the throw-out fingers in place.

When the throw-out-finger rock-shaft is rocked, as heretofore described,by reason of the engagement of the bell-crank lever 89 with the 'casting93, the finger-bar and the throw-out fingers carried thereby are raisedsufficient to throw the sheet of paper into a position immediately infront of the deliveryrolls 100, which rolls are mounted on the frame ofthe press an d are operated by a train of gearing,comprising the pinions101 and 102 and the gears 103, 104, and 105, from the shaft 4, which isoperated through intermediate connections by the power-shaft. Thesedelivery-rollers are located just in front of what I have termed theimperfect-sheet receptacle 106, which is any form of basket or deviceadapted to receive the imperfect sheets, as well as the duplicatesheets, which may be thrown out by the attachment mechanism and devicesand not delivered to the press-cylinder. It is obvious that instead ofthis receptacle tapes running over rollers and various other means maybe employed for carrying the imperfect sheets away and disposing ofthem; but the receptacle shown and described herein forms a veryconvenient and efficient means for getting rid of this paper and receiving it from the throw-out fingers, which are raised to such anelevation that the paper will pass directly between the twodeliveryrollers. The paper is carried from the feedingmachine (notshown) to this attachment in any suitable manner, and tapes or otherdevices may be employed for this purpose, tapes 107, running overrollers 108, being used on the attachment for the purpose of carryingthe sheet through the mechanismto the presscylinder. The nippers on thepress-cylinder usually engage the sheet of paper and carry it throughthe press; but in the event that an imperfect sheet passes through theattachment the throw-out fingers raise said sheet so that the nipperscannot engage it, and to move the sheet forward so that it will beengaged by the delivery-rollers I providrollers 109, Fig. 8, mounted onarms 110, secured to the tripper rock-shaft 65,. which rollers arebrought down into contact with the paper on the extreme forward edge ofthe tapes 107 when the said tripper rock-shaft is on its prolongedforward-and-upward move ment to force the paper into such engagementwith the tapes that it will be advanced over the plate 111 and thethrow-out fingers until caught by the delivery-rollers 100. It will beunderstood, of course, that the distance traveled by the sheet whenelevated on the throwout fingers before it is caught by thedeliveryrollers is very slightrbut in order that the operation of themachine, which is very rapid, may notbe in any wayimpeded I have deemedit desirable to employ the rollers 109, which quickly press the paperagainst the tapes 107, and thereby give to the sheet a movementsufficient to carry it to the delivery-rollers. A spring 112 is securedto the frame of the press and the heel 113 of the throw-out lever 80 forthe purpose of holdingthe roller on the said lever in engagement withits cam 78, and the register-lever is also provided with a heel 114 toengage a stop 115 to limit its forward movement. A spring 116 is securedto the frame of the attachment and the trip-rod to hold said rod in itsproper position in the socket 62.

An arm 117, Figs. 1 and 21, secured to the catch-lever and projectingrearwardly from its pivot, is pivotally connected by a link 118 to abell-crank lever 119, this lever being connected with the ordinarytrip-shaft of a printingpress. I have not shown this trip-shaf t in thedrawings, for it is so well known and understood' and its operation isso simple that the figures necessary to illustrate it would only tend tocomplicate and confuse the illustrations of my invention; but theconnections between the bell-crank lever 119 and the tripshaft can bearranged so simply that no further explanation thereof is deemednecessary, it being only essential that when the prolonged forwardmovement of the catch-lever raises the arm 117 and the link 118 theconnections between the bell-crank lever 119 and the tripshaft shall besuch as to operate the mechanism to trip the press, thereby preventingthe tympan from receiving an impression from the type.

If a number of mutilated sheets should happen to be fed through myimproved detachment, it is desirable that the press should be entirelystopped after a predetermined number of sheets have been thrown out bythe throw-out fingers in the manner hereinbefore described, and forthis' purpose I have provided suitable mechanism and illustrated in thedrawings devices by means of which the press will be automaticallystopped after it has been tripped three successive times, it beingunderstood that the number of times the press shall be tripped before itis stopped is a matter of choice and convenience and can be regulated byVery simple changes, as desired.

An engaging pawl 120 is pivotally secured to the lateral arm- 117 of thecatch-lever, and it is provided with a heel 121, which engages a stop122on the frame of the .pressand normally holds the pawl out ofengagement with the teeth 123 on the segmental plate 121, said platebeing-pivoted to the frame of the press;

moved so that the lug 126 will strike the le-' ver 127 and disengage theshoulder 128 thereon from the plate 129, so that said lever is permittedto drop. The lower end of the lever 127 is connected to one arm of abell-crank lever 130, this bell-crank being connected by a rod 131 withanother bell-crank 132, Fig. 2, pivotally mounted on the forward part ofthe frame of the press. This bell-crank 132 is connected byalink 133with a two-armed lever 134, this lever being pivoted on the frame of thepress and having on its lower end a lug 135, arranged to engage thelower part of a shifting lever 136, also pivoted to the frame of thepress,aud provided at its upper end with a keeper 137, through which thepower-belt 138 passes and is trained around the pulley 139. Then thelever 127 is disengaged from the plate 129, it drops and causes thebell-crank 130 to force the rod 131 forward, thereby operating thebell-crap k 132 and its connections to swing the shifting lever 136 sothatit will carry the' power-belt from the pulley 139 to the idle pulley140, thereby stopping the press. \Vhen'the shifting lever 136 isoperated to throw the power-belt back upon the pulley 139, the lever 127is returned to its original position, the spring 141 pulling onsaidlever so as to insure its shoulder engaging the plate 129.

An arm 142 is secured to the trip-lever 59, and it is adapted to strikethe pawl 125,wnich is substantially in the shape of a bell-crank lever,and disengage said pawl from the segmental plate 124 whenever theattachment operates on a perfect sheet. In order to stop the sheet atits proper place in the machine and for the purpose of squaring thesheet in the machine, I provide stop-fingers 143, Figs.

8 and 17, these fingers being adjustably secured on the tripperrock-shaft G5 in the following manner: A collar 1 14 is rigidly securedon the tripperrock-shaft, and adjacent to said rigid collar is a movablecollar 145. These collars are held together by means of a guideplate146,said platebeingsecured rigidly to the movable collar 145 by means ofthe screw 147 and provided with the downturned end 1 18, which travelsin a groove 149 in the side of the rigid collar, and the pins 150, whichfit in lar. (See Fig. 18.) The movable collar has a forward extension151, and a guide 152, secured on theunderside of thestop-finger 143,

' is provided with inwardly-turned flanges 154,

which slide in grooves in said forward extension 151. ported on themovable collar by means of the guide 152, and it is so arranged thatsaid stop- The stop-finger is therefore sup finger can be moved back andforth, this adjustment being readily accomplished by means of anadjusting-screw 155, the head of which is provided with a groove 156 tore ceive the end of an arm 157,'wl1ose other end is secured to thestop-finger, shown in Fig. 1.7 ,so that when the ad j ustin g-screw isscrewed in or out of the extension on the movable collar thestop-fingeris adjusted forward or back-- ward. The forward end of thestop-finger is turned downwardly to form a hook 15S,which coiiperateswith the bottom guide 155) toform a stop for the paper when it firstenters this part of the mechanism. This bottom guide is secured on anarm 160, which is laterally adjustable on a guide-bar 161, secured tothe front of the attachment, and a flat spring 162 is arranged betweenthe arm and the guidebar to hold the bottom guide in whatever positionit maybe arranged and at the same time permit of its'beiug moved alongon the guide-bar, Fig. 20.

In the operation of the printing-press it is sometimes desired to securean impression of the form upon the tym pan for the purpose of buildingup the tympan wherever it may have hollows, as indicated by thecharacter of the impression thereon. As my improved attachmentautomatically trips the press whenever a sheet of paper is thrown out orwhen a sheet of paper does not pass through to the press cylinder, it isnecessary to provide some device for preventing this trip fromoperating, and in Fig. 21 l have shown a hand-lever 163,

which is in the form of abell-crank and piv- *otally secured on theframe of the press, its

forward end being arranged to engage a lug 164 on the pawl 83 when thesaid lever is operated to hold said pawl in an elevatedposition, so thatit will not engage the throw-out lever 80. With this arrangement themachine can operate indefinitely without tripping the press; but as itis only desired generally to secure one impression upon the tympau I-have constructed this lever 163 tobe operated only while it is held backby hand.

If it is desired to operate the press and allow it to trip indefinitelywithout stoppingthe press in the manner heretofore described, theholding device 165'can he turned by means of the key 166 so that it willengage the engaging pawl and the holding-pawl and prevent them frommoving forward to engage the teeth of the segmental plate 124. When thisholding device is arranged as shown in Fig. 25, it prevents the pawls120 and 125 from moving forward to engage the teeth on the segmentalplate, and therefore this plate cannot be operated so that it willstrike the lever 127, as heretofore explained.

The part I have heretofore designated as a guiding device also operates,as will be readily understood, as a gage for the number of sheets to befed, and also to sustain the paper as against buckling when being drawnby the registering device, and also to control the action ot'theregistering device.

It will be understood that when the guidearm descends the shoulder 39 onsaid arm rests upon the side gage 40 and that the weight of theguide-arm 34 and the pull exerted by the spring 53 are normallysustained by the side gage 40, the space between the lower face of theguide-arn1 and the top plate 38 being determined by the height of thegage 40 and being normally sufficient to allow the passage between saidplate and arm of four or five or any desired number of sheets of paper.Now if it is desired that but a single sheet of paper shall be fed at atime the gage 37 is screwed down, so that when the shoulder 39 restsupon the side gage 40 there will be just sufficient room between saidgage and the top plate to admit of the passage freely and with the leastpossible friction of a, single sheet. tions the single sheet will becaught by the registering device and drawn over into contact with theside gage It) and thus be properly registered and alined. If, however,two or more sheets of paper should be fed under the guiding device whenit is set for the feeding of but a single sheet, when the guide-armdescends the gage 37 will rest upon the two or more sheets and thecombined weight of the guide-arm and the tension of the spring 53 willcause the gauge 37 to clamp the sheets of paper against the top plate sotightly as to afford sufficient resistance to prevent the registeringdevice from moving the sheets over into contact with the side gage 40.The 'registering device will simply slide off of the sheets of paperwithout moving them and the sheets will be subsequently discharged fromthe machine as unregistered before going to the printing apparatus. Itwill thus be readily seen that the gage may be so adjusted as to permitthe registering against the side gage of either one or two i or threesheets at a time, or, in fact, any desired number within thecapabilities of the apparatus; but the adjustment of the gage.

Under these condi-.

but a single sheet of paper at a time and to prevent the feed of morethan one sheet, whether the paper is of one thickness or another.

The rapid operation of the printing-press, as well as the otherconditions which surround my attachment in actual use, are apt to resultin a draft of air which will disarrange the sheet as it passes throughthe attachment, and in order to hold the sheet steadily in place Iprovide an upper guide 170, Fig. 13, which is rigidly secured on thethrow-out-finger rockshaft and bent around into position above the sheetof paper and substantially parallel with the tripper-arm. This upperguide, any number of which may be used, will prevent the paper frombeing blown out of its position in the attachment, and as it is secured011 the throw-out-finger rock-shaft it will be raised by said rock-shaftout of the way of the paper and with the stop-fingers when the trippingdevice operates.

If the side of the sheet is torn or mutilated in such a manner that theregistering device will not draw the sheet of paper over and register itin the attachment, the sheet of paper of course will not cover the holein the tripper-plate, and whenever this hole is uncovered during acomplete operation of the machine the tripper in its downward movementwill enter therein and cause the press to be tripped. The registeringand guiding devices practically cooperate with the stopfingers to squarethe sheet of paper in the attachment, for as the sheet first strikes thedownturned ends of. the stop-fingers and is then drawn over to one sideand against the shoulder -10 on the top plate of the guiding device itwill be arranged in the attachment so that its side edges will beparallel with the shoulder 40 and its front edge in perfect engagementwith the stop-fingers. This operation is of essential importance inorder that the sheet may be delivered to the press-cylinder in properposition for printing.

In the foregoing description of my improved attachment I have referredmore or less to the operation of the various parts, and now for thepurpose of fully explaining the invention and the manner in which theparts cooperate to perform their various functions and accomplish thedesired results I will describe the operation of the whole machine.

In the ordinary operation of the machine when the sheets are all perfectand not more than one is fed from the feeding-machine to IIO theattachment each sheet passes down over the tapes 107 and the plate 111until it engages the downturned ends of the stop-fingers, it beingunderstood that any number of these fingers,'as well as any number ofbottom guides and throw-out fingers, can be employed, as desired. Theregister on one side of the device having been placed in operativeposition on that side of the machine selected as the one with which thepaper must be squared at or about the time the sheet strikes thestop-fingers, the spring 31, operating on the shaft 29, and the spring18, operating on the rod 16, cause the reciprocating screwshaft 22 tomove inward toward the middle of the machine, thereby operating therack-bar 27, the pinion 28, and the correspoudin g rackbar 27 on thereciprocating screw-shaft 22 to move the shaft 22 toward the middle ofthe machine and thereby bring the holder-arm down into contact with thepaper and carry the registerforward in the slot 50, so that it will dropupon the sheet and move it forward to the shoulder 40. Previous to thismovement of the parts the cam 11 has actuated the connecting-rod 16,bell-crank lever 17, link 2&, and the rack-bars to move thereciprocating shafts away from each other and thereby carry theregistering devices toward the sides of the attachment to register thesheet.

It will be understood that the shafts '19 and 22 are duplicated, thecorresponding shafts being numbered 19' and 22, Fig. 3, and thereciprocating screw shaft 22 is operated through the medium of the link24 and its connections with the screw-shaft- 22, the rackbar 27, and thepinion 28, these parts just mentioned being exactly duplicated on theopposite side of the pinion in the plate 25, the collar 26, and therack-bar 27.

The screw-gage. 37 has of course been previously adjusted to thethickness of the paper being operated with, so that it will hold asingle sheet of paper between itself and the top plate 38 in such a waythat the register can pull the sheet back to the shoulder 40; but if twosheets or more than two sheets should happen to be fed into theattachment the holder-arm will hold said sheets so tightly against theplate that the register will be unable to'pull the sheets over to theshoulder 40 and will therefore leave the sheets in such a position thatthe holes in the tripperplate will be exposed, and of course the tripperwill enter the holes and operate the trip mechanism to trip the press.As the sheet strikes the downturned ends of the stop-fingers and isdrawn to the shoulder 40 by the re ister it will be squared with thesepartsthat is to say, it will be arranged in contact with the ends of thestop-fingers and the shoulder 40 without being crumpled or wrinkledandthe shoulder 40 and ends of the stop-fingers are in planes at rightangles to each other, so that the sheet is held with one side parallelto the shoulder 40 and its frontedge parallel with the ends of thestop-fingers. If the sheet is perfect, it will be drawn over to theshoulder 40, the tripper will descend, and as the tripper-plate is soarranged that the sheet when drawn over, as described, will cover theholes 70 the tripper in descending will rest upon the paper over saidholes, and therefore the tripper rock-shaft will operate and theshoulders '7 3 and 74 will not become engaged. This will allow thetripper-lever to move backward sufficiently for the pin 87 to engage theinclined face of the pivoted arm 85, and as the forward end of said armdescends it will release the pawl 83 from engagement with the throwoutlever, and therefore none of the trip mechanism will be operated;but,assurning that the sheet entering the mechanism has one of itsforward corners torn off, the operation is as follows: The registerengages the sheet and draws it back to the shoulder 40; but as thecorner of said sheet has been torn off the holes in the tripper-plate atthat corner will be exposed, and consequently the tripper will entersaid holes, thereby raising the rear end of the tripper-arm into theposition .shown in Fig. 15, so that the shoulders 73 74 become engagedand locked, thus preventing the rock-shaft from moving far enough topush the trip-lever back, so that the pin 87 will engage the incline ofthe arm to release the pawl 83 from the throw-out lever. Therefore asthe throw-out lever is moved forward by its cam 78, the pawl 83 being inengagement with the forwardly-projecting upper end of said throw-outlever, the catch lever 82 is carried forward with the throwout lever andin its forward movement engages I the lug 84: on the trip-lever andmoves the trip-lever forward to a point beyond the limit of its ordinarytravel. This prolonged forward movement of the trip-lever rocks thetripper rock-shaft forward a greater distance than usual and causes thearm 89 of the bellcrank lever 64 to engage the projection 90 on thecasting 93 and rock the throw-out-finger rock-shaft upward to raise thethrow-out finment of the catch-lever and the press is tripped, thisupward movement of the lateral arm also operating the engaging-pawl'120and the holding-pawl 125, so that the segmental plate is advanced thedistance of one tooth toward the lever 127. If two more imperfect sheetsare fed to the machine, the segmental plate will be advanced one toothfor every sheet, and asthe third sheet enters the machine the lug 126will disengage the shoulder 128 of the lever 127 from the plate 129,thereby causing said lever to drop and operate the intermediatemechanism and the shifting lever to stop the press.

The parts of the machine herein described are duplicated on each side ofthe attack ment, and they all operate, with the exceptionof one registerdevice.

It is obvious, of course, that a number of trippers may be arranged andlocated over the front edge of the paper, so that they will operate totrip the press it there is a piece torn from the sheet between thecorners thereof on the front edge, and likewise trippers might also belocated on the sides of the paper and operated in the manner describedin connection with the trippers I have shown. I have referredparticularly to trippers adapted to operate upon the corners of thepaper, for the reason that the corners of sheets are torn ofi much morefrequently than any other parts of the sheet.

The parts are all adjustable forthe purpose of operating on sheets ofdifferent sizes. The screw-shafts 19 22 19 22 can be adjusted to movethe holders and adjusting devices nearer to the center of the attachmentor nearer to the sides thereof, as desired, and the trippers, as well asthe guides and stop-fingers, are all adjustable to facilitate theadjustment and operation of the machine. The manner in which thestop-fingers are supported from the movable collars 145 permits of saidfingers being raised, so that the machine can be examined or cleaned orfor any other purpose desired.

' If two sheets are thrown out of the attachment by the throw-outmechanism successively, the holding-pawl 125 will have engaged two teethon the segmental plate 124, and if the next sheet is also imperfect andthrown out the holding-pawl will engage the third tooth and the presswill be automatically stopped; but if the third sheet is a perfect sheetand is not thrown out, but passes to the press-cylinder, the arm 14.2 onthe triplever will strike the pawl 125 and disengage the latter from thesegmental plate, so that the press will not be stopped.

I have herein referred to my improved attachment as operating upon asingle sheet of paper, the parts being easily adjusted so that only oneperfect sheet of paper can be properly advanced through the attachment;but it will be understood by those skilled in the art that the parts maybe adjusted to operate successfully on more than one sheet and uponcards or envelops and other articles. For example, the guiding devicemay be adjusted so that it will permit the registering device toregister two sheets of paper or two cards or two envelops at one timeand effectually prevent the registration of three sheets.

I Having thus fully described my invention, what I claim, and desire toseen re by Letters Patent, is-

p 1. The combination with the frame of a printing-press, of a feedingattachment comprising a frame secured to the press-frame, a guidingdevice adapted to engage and hold a predetermined number of sheets ofpaper, a register adapted to engage the paper fed under the guidingdevice and register the same on one side of the attachment-frame onlywhen less than the predetermined number of sheets are fed under theguiding device, and means for operating said register immediately afterthe guiding device has engaged the sheets of paper, substantially asdescribed.

2. The combination with the frame of a printing-press, of afeeding-machine attachment comprising a frame, a registering device anddevices for guiding the sheet of papercarrying means adapted to preventthe registering device from registering two sheets which may be held inthe guiding devices by holding said sheets so tightly as to overcome thedrawing action of the register, substantially as described.

3. In a feeding-machine attachment for printing-presses, a guidingdevice comprising a frame, a top plate, a guide-arm adapted to bebrought down into contact with a sheet of paper on the top plate andloosely hold a single sheet of paper so that it can be registered buttightly holding more than a single sheet to prevent registration, andmeans for operating said guide-arm, substantially as described.

4. In a feeding attachment for printingpresses, a guiding device comprising a frame, a top plate, a guide-arm pivoted on the frame, a gagecarried by said guide-arm for holding tightly more than a predeterminednumber of sheets of paper to prevent registration thereof, and means foroperating said guidearm, substantially as and for the purpose described.

5. In a feeding attachment for printingpresses, a guiding devicecomprising a frame, a top plate and a guide-arm pivotally secured tosaid frame, an adjustable screw arranged in said arm and adapted topermit the passage between it and the top plate of only a predeterminednumber of sheets of paper,and means for operating said guide-arm,substantially as described.

6. In a feeding-machine attachment for printing-presses, a guidingdevice comprising a frame, a top plate, a guide-arm pivotally securedtothe frame, a gage carried by said guide-arm, a shoulder on the topplate, a shoulder on the guide-arm adapted to be brought adjacent to theshoulder on the top plate, and means for operating said guidearm,substantially as and for the purpose described.

7. In a feeding-machine attachment for printing-presses, a guidingdevice com prising a frame, a top plate, a guide-arm pivotally securedto the frame and carrying a gage, a

shoulder on the top plate, devices for registering a sheet of paperagainst said shoulder, and means for operating said guide-arm andregistering devices, substantially as described.

8. In a feeding-machine attachment for printing-presses, a guidingdevice comprising a frame, a top plate, a guide-arm pivotally secured tothe frame, a shoulder on the top plate, a shoulder on the guide-armadapted to lie adjacent to the shoulder on the top plate when theguide-arm is brought down into contact with a sheet of paper on the topplate, means for engaging said sheet While it is held between theguide-arm and top plate and register the same in contact with theshoulder on the top plate, and means for-operating said guide-arm andregistering means, substantially as described.

9. In a feeding machine attachment for printing-presses, a guidingdevice comprising a frame, a top plate having a shoulder thereon, aguide-arm pivotally secured to the frame and provided with a shoulder, aregistering device to engage the sheet of paper between the guide-armand the top plate and register it with the shoulder on said top plate,means for operating said guide-arm and registering device, and ascrew-gage carried by the guidearm and adapted to be adjusted to hold asingle sheet of paper lightly so that the register-' ing device can movethe same and hold two sheets of paper so securely that the registeringdevice cannot move them, substantially as described.

10. In a feeding-machine attachment for printing-presses, a guidingdevice comprising a frame, a top plate anda guide-arm pivotally securedto the frame and adapted to hold a sheet of paper lightly between itselfand the top plate so that one sheet can be registered but more than onesheet held so tightly as to' provided with an incline, means for movingsaid registering device back and forth, a lug on the guide-arm adaptedto slide on said incline, and a spring connected to the guidearm and tothe guide-frame, substantially as and for the purpose described.

12. In a feeding-machine attachment for printing-presses, thecombination with aguiding device, a top plate and a pivoted guidearm, ofa registering device adapted to be moved back and forth and comprising ablock having an incline thereon, a register-arm carried by said blockand arranged to operate in .slots'in the guide-arm and top plate, meansper, of registering devices'carrying a vertically-operating register-armadapted to be antomatically actuated to engage the sheet un' der saidguiding device and register the same, and means for reciprocating saidregistering device back and forth between the two ends of the guidingdevice, substantially as described.

14. In a feeding attachment for printingpresses, the combination with aguiding device and aside gage, of a registering device comprising areciprocating block, a registerarm pivoted thereto and coacting withsaid block to form gripping-jaws a locking-plate secured to, anddepending at an angle from, said arm andprovided with notches in itsedge, a spring-arm secured to the block and carrying a roller adapted toengage said plate and means for rocking said arm and plate upon theirpivots at each reciprocation of said block, substantially as described.

15. In a feeding attachment for printingpresses, the combination with aguiding device and a side gage, of a registering device comprising areciprocating block, a registerarm pivotally mounted on said block andcoacting therewith to form a gripping-jaw, a locking-plate secured to,and depending at an angle from, the register-arm and provided withnotches in its edges, a spring-arm secured to the block and adapted toengage the notches in the edge of the locking device and a stop adaptedto engage and check the advancing movement of the lockingplate, so as todisengage the spring-arm from the notches in the locking-plate and causethe registerarm to swing on its pivot and, be thereby caused to grip thepaper upon said block, said stop also operating to cause the spring-armto engage another notch in the locking-plate to hold the register-armyieldingly clamped on the paper, substantially as described. 16. In, afeeding-machine attachment for printing-presses,the combination with aguiding device, of a register device adapted tobe moved back and forthto register a sheet of paper in the guiding device, and means foroperating said register, said register comprising a block, aregister-arm pivotally mounted on said block, a locking device rigidwith said register-arm, a spring-arm adapted to engage the lockingdevice to hold the register-arm in an elevated position, a pin ontheguiding device arranged to engage said locking device as the registermoves forward to bring the register-arm into contact with the sheet ofpaper on the guiding device and lock the same, substantially asdescribed.

17. In a feeding-machine attachment for printing-presses,the combinationwith a guiding device, of a registering device adapted to be clampedupon a sheet of paper in the guiding device and register the same in theattachment, means for moving the register back and forth, said registercomprising a block havin g an arm thereon, a register-arm pivoted tosaid arm on the block, a locking plate ICC

